This would really take a lot of doing. Napoleon's army tended to supply itself through 'le maraude', getting supplies off the countryside. This worked fine in Germany and Central Europe, but the system broke down in Poland and Russia, where there was simply nothing to steal. The Grande Armee had already lost half its strength BEFORE it crossed to border of Russia, and by the time it reached Moscow, was a husk that would have been hard-pressed to fight any kind of battle.
The Saint said:
WI Napoleon had won decisively at Borodino
Wouldn't matter, unless he somehow managed to capture the Tsar.
The Saint said:
The Russian scorched earth policy was less effective
Russia was poor enough there wasn't much to burn. Napoleon might have taken less casualties, but the overall effect would have been the same.
The Saint said:
I don't know how much difference that would make. Napoleon might be in a little better shape for his retreat if he could winter there.
The Saint said:
The 1812 winter was not harsh
Again, the retreat would go a little less badly. But it could hardly have gone worse.
The Saint said:
Alexander I still refused to negotiate? How far east would Napoleon be prepared to go? Up to the Urals? The Volga? Beyond? With what result?
Finally, Napoleon wasn't interested in conquering Russia, just knocking them out of the war. If he'd magically succeeded in achieving all his objectives, then he probably would have just left Russia with a cooperative ruler and some harsh indemnities, allowing him to dominate Europe unquestioned. Unfortunately, he went into Russia without any kind of plan as to what he'd do when he won, so I imagine that they would just rise up in his rear a few years later, so his fate would be the same, just delayed.